Pneumatic fastener



FIG. 1 is a top plan view of the pneumatic fastener.

FIG. 2 is a front elevational view thereof.

FIG. 3 is a left side elevational view thereof.

FIG. 4 is a rear elevational view thereof.

FIG. 5 is a right elevational view thereof; and,

FIG. 6 is a bottom plan view thereof. 

The ornamental design for a pneumatic fastener, as shown and described. 